QRcode and Barcode generation for Rails apps. Saves resulting png's to the filesystem or as3. It includes a C extension that wraps the GNU Barcode project. For qrcode generation, it uses the [qrcode gem] (http://nycrb.rubyforge.org/qrencoder/), which in turn, wraps the libqrencode C library.
If you intend to generate QRCodes, you'll need to compile the C library libqrencode available [here] (http://megaui.net/fukuchi/works/qrencode/index.en.html).
curl http://fukuchi.org/works/qrencode/qrencode-3.2.0.tar.gz | tar xz cd qrencode-3.2.0 ./configure make sudo make install
You'll also need ImageMagick to generate the barcode png's.
Add this line to your application's Gemfile:
And then execute:
This will compile the gbarcode extension, included within.
<%= qrcode 'whasupbro' %> <%= barcode 'notmuchmate' %>
The <%= barcode %> heleper generates a barcode in BARCODE_128 format and accepts the following options:
width height scaling_factor xoff yoff margin
<%= barcode width: 100, height: 30, xoff: 100 %>
The resulting PNG will be saved on the filesystem (or as3) and rendered into the view.
There is nothing to configure if you want the resulting png's saved to the filesystem. This is the default. If you want to upload the images to AS3 you'll need to configure the sorage options, like so:
MultiEncoder::Storage.configure do |c| c.destination = :aws c.aws_bucket_prefix = SOME_PREFIX c.aws_access_key = YOUR_ACCESS_KEY c.aws_secret_access_key = YOUR_SECRET_ACCESS_KEY end
It is also possible to set these values as environment valiables
That's it, you are ready to go.
The gem will create buckets with the following names, depending on the Rails environment:
and so on.